Drawing-off rolls.



'J. R. MILSON.

DRAWING-OFF ROLLS.

APPLICATION FILED MAY 11, 1908.

Patented Mar. 29, 1910.

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J. R. MILSON, DRAWING-OFF ROLLS.

APPLICATION FILED MAY 11, 1908.

Patented Ma1t29, 19 10.

WMH W v IIVVE/VTOI? (RAW/BELLS on WIT/V5885? I MTORAIEY JOHN R. MILSON,OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TOLISTER-NOBLE ROLLER COMPANY, A CORPORATION OF MASSACHUSETTS.

DRAWING-OFF ROLLS.

To all whom it may concern:

Be it known that I, JOHN R. MILsoN, a citizen of the United States,residing at the city of Boston, in the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements inDrawing-Off Rolls, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to drawing-0H rolls for wool combs, gill boxes,and the like, and the object of the invention is to provide a set ofrolls that can be used without a leather apron to engage and draw offthe wool fringe from the comb teeth without injuring the fiber, and passthe same in the form of a sliver through the trumpet to the coiler toballing head.

It has been found that ordinary fluted rolls when used for drawing OKthe wool from the comb have a tendency to jam, cut and injure or destroythe fibers unless said rolls are provided with leather, or othersuitable yielding material, to serve as a cushion against which the woolis nipped. These leathers have heretofore been made in the form ofendless aprons which, owing to the severe bending strains to which theyare subjected in passing through the corrugated rollers, are soon wornout and destroyed. Then again, the wear caused by the action of drawingthe fibers from the comb through the pins also assists in destroying theapron, usually by wearing away the middle portion of the same. Theseaprons are usually of the very best quality of leather and areconsequently very expensive, and as several of said aprons are employedin each of the combing machines the expense of constantly replacing themto maintain the efiiciency of the machine, is considerable.

My invention consists broadly of a set of especially constructed rollswhich engage and draw oif the wool and effectually do away with the useof the leather apron. A set of these rolls comprise a nip roll, a pin ortoothed roll meshing therewith, for drawing off the fiber, and a clearerroll meshing with said nip roll for clearing or drawing the fibers fromthe teeth of the pin roll.

The invention further consists in providing any of said rolls with acushioning or yielding material at the points where the Specification ofLetters Patent.

Application filed May 11, 1908.

Patented Mar. 29, 1910.

Serial No. 432,078.

fiber is nipped between them so as to effectually prevent the cutting orinjuring of said fibers when acted upon by said rolls.

Heretofore where the aprons were used the fluted rolls were obliged tobe made of considerable size so as to prevent a too rapid cutting ofsaid aprons, but by my improved construction the rolls may be made muchsmaller, allowing the nipping line of the rolls to be brought muchcloser to the comb circles thereby drawing out more of the fibers, orsaving more of the long stock and leaving less waste or noils in thesmall circle.

Another feature of my improved rolls is that the same are equally welladapted to be used as the front rollers in a gill-box, where they are ofgreat advantage, first, by doing away with the leather apron ordinarilyused there, and second, by being so much smaller the shorter fibers canreach the nip before the pins of the fallers are withdrawn from thesliver, and when used in this capacity the third or clearer roll may bedispensed with if desired.

\Vith these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings: Figure l is a diagrammatic viewillustrating both the large and the small comb circles and the relativepositions of the drawing-off rolls thereto. Fig. 2 is a side elevationof the rolls and the frame in which the same are supported. Fig. 3- is atop or end view of said frame showing the flexible adjustment of theroll bearings at one end of said frame. Fig. 4 is a sectional end viewon line 4.4: of Fig. 2 showing the relative position of the three rollsand the flexible bearings by which the nipping tension of the same areadjusted. Fig. 5 is an enlarged side elevation of the pin roll partly insection. Fig. 6- is an enlarged sectional end view of said pin roll online 6-6 of Fig. 5, also showing a portion of the nip roll meshing withsaid pin roll. Fig. 7 is a partial end view of the cage with the cushionbushing removed. Fig. 8 is an enlarged partial sectional end view ofsaid pin roll on line 8-8 of Fig. 5. Fig. 9- is an end view of thecushion bushing. Fig. 10 is an enlarged detail of one of the ribs ortoothed bars connecting the gears at either edge of the cage or pinroll. Fig. l1 is a modification showing a portion of one of thecorrugated rolls having cushions on the outer edge of its ribs. Fig. 12is a section through one of the frames on line 1212 of Fig. 3 looking inthe direction of the arrow, to illustrate the position and action of theratchet and pawl. Fig. 13- is a sectional view on line 13-13 of Fig. 8showing one of the clearer roll bearings and the means for adjusting thesame.

My improved drawing-off rolls are more particularly adapted to be usedon that style of combing machine known as the Noble comb, but the samemay be used on any machine of this character, and in the drawings onlysuch parts of the machine are represented as is necessary to illustratethe opera tion of my invention and its working relation to the comb.

At 1 is represented the large comb circle and 22 the small comb circleslocated with in and on either side of said large circle.

My invention consists broadly in the construction and arrangement of aset of drawing-olf rolls, which rolls are supported in the two endframes 3 and l, said frames being located some distance apart andretained firmly in position by means of the tie rod 5 which passesthrough the ears 6-6 in said frames, the latter being firmly held intheir required position by means of the binding nuts 77.

The pin roll 8, hereinafter described in detail, is keyed or otherwisesecured to the driving shaft 9, which shaft extends down below the lowerframe a and may receive its motion from a set of driving gears, notshown, or any other means for rotating the same at the proper speed.

The nip roll 10 is a plain fluted roll with long teeth or ribs adaptedto mesh with those of the pin roll. This nip roll is mounted on theshaft 11, which is provided with bearings at either end in the floatingboxes l212. The pressure of this roll against the pin roll may beregulated by the adj ust ing screws 1313 in either frame. Each screwpasses loosely through its cap 14- and is threaded through the loosehead 15, its threaded end resting against said bearing 12. A ratchetwheel 16 is loosely keyed to slide on said bolt, the teeth of which areengaged by a pawl 17, whereby said bolts are prevented from turning backafter having been set in position. A tension spring 18 engages the loosehead by which more or. less tension may be exerted on said bearings 12by adjusting said bolts. An auxiliary tension spring 19, see Fig. 3, islocated on the underside of each of said boxes 12 for the purpose ofproviding further flexibility to said nip roll, causing the same to morereadily yield and relieve the force of the nip or grip on the stock asthe same is being passed between said rolls to prevent cutting or injuryto the fibers.

The clearer roll 20 is tinted or provided with grooves throughout itslength to receive the teeth of the nip roll and thus be driven to run intime therewith, said clearer roll being for the purpose of engaging thefibers and lifting the same from the pins on the pin roll so as toprevent said fibers from winding around and clogging up the pin roll andinsure its effective action. This clearer roll 20 is mounted on theshaft 21 which shaft is provided with bearings 2222 at either end, saidbearings being adapted to slide toward and from the nip roll 10 in theslotted portion 23 of the side frames, see Fig. 13, its position beingregulated by means of the adjusting screw 2%, the upper end of which isadapted to work loosely through the cap the inner end 26 being threadedthrough the portion 27 of the bearing and rests against the bottom 28 ofthe slot. The tension spring 29 presses against the portion 27 of thebearing and provides means whereby said roll may yield as the sliverpasses between it and the nip roll so to prevent injury to the fibers.

A plate 30 is attached to the lower frame whereby the whole device issupported from the main frame of the comb, or other convenient place, inthe desired position to properlyengage the wool fringe projecting fromthe comb circles.

One of the features of this invention is the construction of the pinroll which is preferably made in the form of a cage, the same beingprovided with gear teeth 31 and 32 at either end thereof, each tooth ofthese respective gears being connected by a long thin bar 33, the outeredge of each bar being slightly below the face of the tooth of the gear,each bar being serrated on its outer edge or formed with a plurality offine outwardly projecting teeth 33 the same being adapted to enter thewool and engage the fibers thereof to draw the same from the combcircles. An essential feature of this construction is the forming ofthese teeth below the outer edge of the gear teeth so as to providesuflicient room for the stock between the ribs of the nip roll and thepoints of the teeth on the pin roll to prevent the cutting of saidstock.

It is found in practice necessary and desirable to provide a cushionagainst which the nip roll is to bite the stock. This cushion may bemade in any desirable way but for convenience I have formed a bushing35%, which may be constructed of raw-hide, leather, fiber, or any othermaterial suitable for this purpose, said bushing being provided with aseries of grooves 35, see Fig. 9, throughout its length for the purposeof admitting inwardly projecting ribs 36 of the cage, see end View Fig.7. The portions 37 between these grooves are nicely rounded out as at 88against which rounded portion the stock is engaged and pressed by theteeth of the meshing nip roll 10, see Fig. 6. This bushing, as is shownin Fig. 5, is pressed into the pin roll caging and is secured inposition therein by means of the nut 39 which is threaded onto the arboror shaft 40 on which said roll is mounted.

The operation of my invention may be more fully described as follows:The prime object of my invention is to do away with the expensiveleather belts, which have heretofore been used for the purpose ofengaging and drawing off the fibers from the comb circles. In doing thisI have provided a set of corrugated rolls and in order to cause the sameto operate in the most effective and satisfactory manner I have provideda toothed wheel 41 which is caused to rotate in the proper direction andat the desired speed by gears, or other suitable means not shown, to actupon the fringe before reaching said rolls and to raise the fringe andcause the same to extend and stand in the right position to be morereadily engaged and operated upon by said rolls. The fringe thus raisedis engaged and drawn in between the nip roll and the pin roll, the teethof the latter entering the fibers, while the ribs of the former firmlynip with a strong firm grip said fibers against the flexible oryieldable cushion between the rows of pins or teeth in the pin rollsecurely holding the same from slipping. The fiber is led from herebetween the nip roll and the clearer roll 20, which latter roll changesthe direction or lead of the stock and raises the fibers from the pinsor teeth in the pin roll, nicely clearing the same and preventing thestock from winding around and clogging up said roll. From here the stockis led in the form of a sliver through the trumpet 42 preferably to thesecond set of drawing-off rolls located in the small comb circles. Herethe sliver is increased by the addition of the fringe gathered and drawnfrom the small circles in the same manner as drawn from the large combcircles, whence the whole is led through the trumpet 43 to the ballinghead or to the can 14.

This construct-ion of rolls is equally well adapted to be used as thefront rolls on gillboxes to do away with the usual apron from which thesliver is led to the baller, or the same may be used in silk, flax, andjute machines, or any other fiber operating machinery in which the samemay be adapted to operate in a practical manner.

I do not restrict myself to placing the cushions between the rows ofteeth of the pin rolls, as cushion strips may be secured to either rollor held on the outer edges of the teeth of either roll, if desired, asshown in Fig. 11. Neither do I wish to be restricted to the arrangementof the pins or teeth as these may be made of pins driven into the rollerformed and arranged in any suitable or convenient manner, and in fact inthe operation of some fibers the pins or teeth may be done away withaltogether depending entirely upon the flexible nip of the rolls fordrawing off the fibers, and therefore any arrangement of rolls having acombination of both pins or teeth and cushions or cushions aloneattached to the rolls to act upon the fiber would come within the spiritand scope of my invention.

My improved rolls are practicalin their construction and efiective intheir operation and by their use combs and gill boxes and analogousmachines to which these rolls may be applied may be operated at muchless expense as the costly aprons are done away with and at the sametime a greater percentage of the long fiber is saved.

What I do claim as my invention, and desire to secure by Letters Patent,is:

1. A drawing off roll comprising a toothed cage, and an internal body ofcushioning material located within said cage, portions of said cagebeing cut away to expose said cushioning material.

2. A drawing off roll comprising a toothed cage, and an internal body ofcushioning material located within said cage, said cage being providedwith slots alternating with the teeth thereof.

3. A drawing off roll comprising a cage formed with longitudinallyarranged serrated ribs, and an internal body of cushioning material,portions of said cushioning material being exposed between said ribs.

4. A drawing off roll comprising a cage provided with internal ribs, anda bushing of cushioning material provided with grooves to receive saidribs, said cage being slotted to expose portions of said bushing.

A drawing off roll comprising a cage provided with serrated ribs, andcushioning means forming a part of the body of said roll.

6. In a machine of the character described, a pair of corrugateddrawing-off rolls, one of said rolls provided with teeth, cushioningmeans secured between the teeth of one of said rolls against which thefibers may be nipped without injuring the same, and means for clearingsaid toothed roll.

7 In a machine of the character de scribed, a pair of corrugateddrawing-off rolls, a plurality of rows of teeth on one of said rolls,cushioning means secured bet-ween said rows of teeth of said rollagainst which the fibers may be nipped by the ribs of the opposite rollwithout injuring the fiber.

8. In a machine of the character described, a pair of drawing off rollsone of which is provided with ribs and'cushioning means secured betweensaid ribs, and means for clearing or removlng the stock from sald ribs.

9. In a machine of the character described, a pair of corrugateddrawing-off rolls, one of said rolls provided with a plurality of rowsof teeth, cushioning means secured to said roll between said rows ofteeth, and a clearer roll for raising and clearing the fibers from saidtoothed roll.

10. In a machine of the character described, a pair of corrugateddrawing-off rolls, engaging teeth on one of said rolls, cushioning meanssecured between the teeth of said rolls, a corrugated clearer rollmeshing with one of said rolls, and means whereby said rolls may yieldor draw apart as the stock passes between them.

11. I11 a machine of the character described, a toothed roll, cushioningmeans connected to said roll, a corrugated nip roll adapted to nip thefiber against the cushion on said toothed roll, and a clearer rollmeshing with said nip roll and arranged to lift the fiber from and clearthe teeth of the first mentioned roll.

12. In a machine of the character described, a toothed roll, cushioningmeans connected to said roll, a corrugated nip roll adapted to nip thefiber against the cushion on said toothed roll, a clearer roll meshingwith said nip roll and arranged to lift the fiber from and clear theteeth of the first mentioned roll, and means for flexibly adjusting thepressure of said rolls against each other.

13. In a machine of the character clescribed, a pair of corrugateddrawing-off rolls, engaging teeth on one of said rolls, cushioning meanssecured between the teeth of said rolls, a corrugated clearer rollmeshing with one of'said rolls, and means for flexibly adjusting thepressure of said rolls against each other.

14. In a machine of the character de scribed, a toothed roll, cushioningmeans connected to said roll, a corrugated nip roll adapted to nip thefiber against the cushion on said toothed roll, a clearer roll meshingwith said nip roll and arranged to lift the fiber from and clear theteeth of the first mentioned roll, means for exerting a flexiblepressure of the nip roll and the clearer, and means whereby saidpressure may be adjusted.

15. In a machine of the character described, a roll provided withserrated longitudinal bars located at intervals around its circumferencefor the purpose of engaging and drawing in the fibers and material of asofter material located between said bars.

16. In a machine of the character described, a. toothed roll providedwith serrated longitudinal bars located at intervals around itscircumference, a corrugated nip roll, and cushioning means between said1011- gitudinal bars against which the ribs of said nip roll nips thefibers.

17, In a machine of the character described, a toothed roll providedwith serrated longitudinal bars located at intervals around itscircumference, a corrugated nip roll, cushioning means between saidlongitudinal bars against which the ribs of said nip roll nips thefibers, and a driven gear on said toothed roll meshing with said niproll to keep said rolls in time with each other.

18. In a machine of the character described, a toothed roll providedwith serrated longitudinal bars located at intervals around itscircumference, a corrugated nip roll, a. bushing or shell of cushionlngmaterial adapted to be forced into said toothed roll to form cushionsbetween the row of teeth thereon against which the ribs of said nip rollnip the fibers.

In testimony whereof I afl lx my signature in presence of two witnesses.

JOHN R. MILSON.

Witnesses:

HOWARD E. BARLOW, E. I. OGDEN.

